Puddling and heating furnace



V W.-ST:U BBL-EBINE. Puddling and Heating Furnace.

F/G.2. n u-n "\u (ink CIDILDW N.PETF.R8, PHOYO LTHOGRAFNER WASHINGTON D C UNITED STATES FFICEQ.

RIGHT TO BERNARD O. LAUTH, OF

PHILADELPHIA, PENNSYLVANIA.

PUDDLING AND HEATING FURNACE.

SPECIFICATION forming part of Letters Patent No. 226,368, dated April 6, 1880.

Application filed January 29, 1880.

To all whom it may concern:

Be it known that 1, WILLIAM STUBBLE- BINE, a citizen of the United States, residing in Bethlehem, Northampton county, Pennsylvania, have invented certain Improvements in Puddlingand Heating Furnaces, of which the following is a specification.

My invention relates to certain improvements in the puddlin g and heatin g furnace for which Letters Patent No. 223,962 were granted to myself and my assignee, Bernard 0. Lauth, January 27, 1880 5 and my improvement consists of the combination, in a puddling or heating furnace, of the fire-chamber, a gas-chamber having apartition and communicating with the said fire-chamber through openings, some of which are on one side and others on the opposite side of the said partition, with a blastpipe for so directing air into the gas-chamber that there shall be a more determined ascent of the gaseous products of combustion into the said gas-chamber, a more thorough admixture of air and gases therein, and a more positive and uniform discharge of the air and gas into the said fire-chamber than in the furnace described in said patent.

My improvement further consists of the combination of the said gas-chamber, its partition, a partly-perforated plate, and a blastpipe, so that air may meet the gaseous products of combustion in the form of jets discharged above the outlet-openings from the said gas-chamber to the fire-chamber.

My improvements further consist of the combination of the fire-chamber, ash-pit, the gaschamber and its partition with blast pipes having suitable valves for regulating the blast to the ash-pit and gas-chamber, substantially as described hereinafter.

In the accompanying drawings, Figure 1 is a sectional elevation of sufficient of a puddling or heating furnace to illustrate my improvements, and Fig. 2 a sectional plan on the line 1 2. 5 Ais the fire-chamber; B,thepuddling-chamber; E, the ash-pit, provided with the usual doors; a, the feed-opening for the fuel; (I, the bridge-wall; f, the grate g, the hollow chills surrounding the puddling-bed.

Above the fire-chamber is erected a structare, I, similar to that described in my said patent, but difierently arranged intern ally, the chamber W being separated into the two communicatin g compartments w and w by a transverse partition, h, which is not shown in the said patent.

The fire-chamber has a direct communication with the compartment to through a series of 'inlet-openings i, in the roof m of the said fire-chamber, near the front of the furnace, the compartment 10 communicating with the said fire-chamber through outlet-openings i i at the rear of the fire-chamber, near the bridgewall (I, and the two compartments having free communication with each other above the partition h. i

K is a blast-pipe having two branches, 7570, each of which is provided with a valve or cook, I), the branch L communicating with the ash-pit and the branch with the chamber 70 W. It is important that the air introduced into this chamber should be directed toward the outlet-openin gs z" i and should be deflected away from the inlet-openings. It is also preferable that the air should be introduced into the chamber in a number of jets.

In order to bring about this result, I in the present instance place a horizontal plate or partition, n, across the structure F, so as to make an air-chamb er, P, above the gas-chamher W, and this plate is imperforateabove the compartment 10, but perforated above the partition h and above the compartment 20.

The blast-pipe 7c extends into the chamber P, and the air from this pipe recoils and 8 5 passes through the perforations into the chamber W. In the meantime the gases evolved from the fuel, and accompanied with more or less flame of a characterindicating incomplete combustion, pass upward through the 0 openings i i in the roof of the fire-chamber and meet the jets of air above the partition h, and there is a thorough admixture of the gas and air at this point and within the compartment w, the thoroughness of the admixture being assured by the large chamber in which it takes place.

The mixture of air and gas passes through the outlet-openings 'i i into the fire-chamber near the bridge-wall, where it is thoroughly IOO consumed and intensifies the heat of the furnace.

The good results attending the use of my invention are due, it is believed, first, to the mode of so directing the blast into the chamber that there shall be a more free passage of the gases into the same from the fire-chamber than in the device described in the aforesaid patent, and a more determined return of these gases combined with air to the said fire-cham her; and, second, to the thorough admixture of air and gases in an extended chamber before they can escape into the fire-chamber, better result-s being attained by this means than by ajunction of the air and gas immediately at the outlet into the fire-chamber or in constructed passages communicating with the outlet.

It will be well to observe the following rules as regards the regulation of the blast: Immediately after the introduction of every fresh supply of fuel into the fire-chamber the valves of the branch pipes 70 and 70 should be so adjusted that the volume of air introduced into the chamber W will be increased and that introduced into the ash-pit decreased. The result of this will be the rapid ascent of the quickly-generated gaseous products of combustion into the chamber W at a point near the front of the furnace and the return of these gases intimately mixed with air to the said fire chamber near the rear of the same. After the charge of fuel has reached an incandescent condition and the volume of unconsumed gaseous products is decreased the upper blast may be reduced and the blast to the ash-pit increased until the furnace demands afresh supply of fuel. It should be understood, however, that the blast introduced to the ash-pit is much less forcible than that usually employed. Hence there is none of that forcing of ashes and other particles of fuel into the puddling-bed which has such an injurious effect on the iron in ordinary puddling-furnaces. The upper blast, too, is less forcible than that commonly used when jets of heated air are forced into the furnace above the bridge-wall.

I claim as my invention-- 1. In a puddlin g or heating furnace, the firechamber, a gas-chamber, W, having a partition, it, and communicating with the said firechamber through openings z t on one side of the partition and openings 2" on the opposite side of the partition, in combination with a blast-pipe, from which the air introduced into the said gas-chamber is directed toward the openings 1', all substantially as set forth.

2. The combination, in a puddling or heating furnace, of the chamber W, having a partition, h, and communicating with the firechamber, the partly-perforated partition 01, and blast-pipe 70, substantially as specified.

3. The combination of the fire-chamber and ash-pit of a puddlin g and heating furnace with WVitncsses ALEXANDER PATTERSON, HARRY SMITH. 

